In the lower strata of the of the Old West, look for two bugfolk trying to calm an alien quadraped
None of your powers or tech can do anything, you'll have to mount it, as you would any vehicle, and rodeo it into submission. Just match the button prompts as they appear.
Complete the sequence to calm the creature, win a brick, and get a point in Minigame Master.
Note that, while the challenge is over, you will see these same folk elsewhere in Chronopolis, as the bugs try to guide their wayward beast home.